- deregister Table from MetaData when autoload fails; [ticket:289]

1 files changed, 8 insertions, 4 deletions

diff --git a/lib/sqlalchemy/schema.py b/lib/sqlalchemy/schema.py
index bb9e534c7..f4e89ef24 100644
--- a/lib/sqlalchemy/schema.py
+++ b/lib/sqlalchemy/schema.py
@@ -91,10 +91,14 @@ class TableSingleton(type):
             # we do it after the table is in the singleton dictionary to support
             # circular foreign keys
             if autoload:
-                if autoload_with:
-                    autoload_with.reflecttable(table)
-                else:
-                    metadata.engine.reflecttable(table)
+                try:
+                    if autoload_with:
+                        autoload_with.reflecttable(table)
+                    else:
+                        metadata.engine.reflecttable(table)
+                except exceptions.NoSuchTableError:
+                    table.deregister()
+                    raise
             # initialize all the column, etc. objects.  done after
             # reflection to allow user-overrides
             table._init_items(*args)